Based on MySQL 5.5.37, including all the bug fixes in it, Percona Server 5.5.37-35.1 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of the release can be found in the 5.5.37-35.1 milestone at Launchpad.
InnoDB could crash if workload contained writes to compressed tables. Bug fixed #1305364.
GUI clients such as MySQL Workbench could not authenticate with a user defined with auth_pam_compat plugin. Bug fixed #1166938.
Help in Percona Server 5.5 command line client was linking to Percona Server 5.1 manual. Bug fixed #1198775.
Percona Server version was reported incorrectly in Debian/Ubuntu packages. Bug fixed #1319670.